Answer
With promazine hydrochloride, tardive dyskinesia is particularly associated with prolonged treatment and older age, and its risk and likelihood of irreversibility are believed to increase with longer therapy and higher total cumulative doses.
Sources for this answer
- Promazine Hydrochloride 25mg/5ml Oral SyrupRosemont Pharmaceuticals Limited · emc · SmPC §4.4 Special warnings and precautions for use · Version 12Document updated
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